皮皮学，免费搜题
登录
搜题
【单选题】
已知电路如图所示,电路原已稳定,开关打开后电容电压的时间常数 等于( )。A.
1s
B.
0.1s
C.
2s
D.
0.5s
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】It's 10 p. m. You may not know where your child is. But the chip does. The chip will also know if your child has fallen and needs immediate help. Once paramedics arrive, the chip will also be able to ...
A.
telling the location of your child
B.
telling doctors your child's medical history
C.
telling whether your child needs immediate help
D.
telling the rescue workers which medicine your child should take at once
【单选题】最易氧化变质的煤种是( ),含碳量最高的煤是( ),挥发分含量最高的煤是( )。
A.
无烟煤、烟煤、褐煤
B.
褐煤、无烟煤、褐煤
C.
烟煤、贫煤、无烟煤
D.
贫煤、褐煤、烟煤
【简答题】英文信函在翻译成汉语时,应按照中文信函的_____________书写。
相关题目：
参考解析：
知识点：
题目纠错 0
发布
